
Origin
Designations
How is foie gras produced ?
Benefits
Origin
:
Foie
gras would have been discovered in Egypt, at the dawn of the third millennium
before J.C, from wild geese having migrated to spend winter in the Nil delta
marshes. Amazed by the size and taste of these geese livers, Egyptians would
have understood that the animals naturally created their fattened liver
by overfeeding in order to accomplish long migratory flights. One only had
to reproduce this operation to discover Foie Gras.
Designations
:
Goose
or duck ?
Goose foie gras always has its supporters who appreciate the subtle sweetness
of tastes. It is said to have a "more delicate, elegant, aristocratic"
taste. But duck foie gras has also its supporters who prefer the frankness
of its musk flavours, mixed with a touch of lasting bitterness.
Fresh
Foie Gras :
Fresh foie gras can be used to prepare preserves but generally, it is used
for warm preparations like for example, foie gras with grapes.
Fresh foie gras is generally cut into slices, simply high heat cooked in
some grease and always served with an acidulated or sugared sauce.
Semi-cooked
Foie Gras :
Semi-cooked foie gras is generally available in terrines, jars or tins.
It is a half-preserve that has been pasteurised, which means through-cooked
to between 70 and 85°c depending on manufacturers.
Preserved
Foie Gras :
Preserved foie gras is sterilised, through-cooked to between 105°C and
115°C, it may be stored for some years. It is the most traditional preparation,
it is served at the beginning of the meal, as an entrée or aperitif.
However, there is a wide range of preserved foie gras: whole foie gras,
mass, parfait, mousse
Regulations are very precise about the various designations containing the term "foie gras".
Though these 3 preparations are exclusively based on foie gras, they have not the same quality and the same price. Whole foie gras is the best of the hierarchy, it always come from very high quality foie gras. Parfaits are made by mixing 75% minimum of foie gras with poultry lives. Pâtés, médaillons, galantines, mousses de foie contain 50% minimum of foie gras.
How
is liver fattened ?
Migratory birds in particular, naturally overfeed to endure winter and to
fly long distances, and thus, stock fat in their liver.
Following this observation, man has copied this natural operation for 4000
years, to obtain foie gras.
A fattened liver is not a diseased liver: scientific studies prove it. It
is a palmiped's liver showing a lipidic excess (fatty liver) due to a rich
feeding, without presenting signs of cellular degeneration. Therefore, it
is not, as we can hear sometimes, a hepatitis or cirrhosis. In addition,
when a fattened poultry is released, the fattened liver goes back to its
initial weight, without any modification of its physiological functions.
This is called the reversibility of fattened liver and demonstrates that
it is obtained naturally.
Before being fattened, poultry are bred. The one-day duckling and gosling
are grown up. These young animals are paid particular attention related
to ambient temperature and feeding. Cramming, which lasts 2 or 3 weeks according
to species, is done progressively, 2 or 3 times a day for geese. The animal
must be in good health status and as it does not bear an excessive heat,
put in good conditions (venting, air-conditioning).
Corn is the best feeding food because on the one hand, of its high starch
content (75%), and on the other hand, of its composition poor of certain
enzymes permitting an important accumulation of lipids in the liver.
Benefits
Consumption of confit, foie gras, goose and duck fats is a source of benefit
for our health.
As far back as the sixties, Pr Serge RENAUD devoted to the study and prevention
of coronary disease.
In 1978, he discovered the importance of some unsaturated fatty acids for
prevention of cardiovascular diseases; this is the beginning of the «
Paradoxe Français » channel.
This is the reason why the W.H.O (World Health Organisation) launched the
MONICA project in 1987 in 41 centres dispatched in 21 pays, among which
3 in France (Lille, Strasbourg, Toulouse). So, it was shown that in Toulouse,
where people are big consumers of confit, goose or duck fat, the coronarian
mortality is among the lowest and the life expectancy among the best. Geese
and duck products have a high polyunsaturated fatty acids content, which
are organism protectors.
Figuigers
benefits :
Pr René BABILE, from the Ecole Nationale Supérieure d'Agriculture
of Toulouse emphasised thanks to a study carried out in 1998, that fig modifies
the composition of fatty tissue, adding more polyunsaturated fatty acids,
and especially, linoleic or linolenic acids. By increasing the unsaturated
fatty acids-saturated fatty acids ratio, the fig confers to Figuigers factors
more favourable to health than the corn fattened duck.